WO2020232565A1 - Drug infusion device - Google Patents

Drug infusion device Download PDF

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Publication number
WO2020232565A1
WO2020232565A1 PCT/CN2019/087342 CN2019087342W WO2020232565A1 WO 2020232565 A1 WO2020232565 A1 WO 2020232565A1 CN 2019087342 W CN2019087342 W CN 2019087342W WO 2020232565 A1 WO2020232565 A1 WO 2020232565A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving
drive
drive unit
unit
infusion device
Prior art date
Application number
PCT/CN2019/087342
Other languages
French (fr)
Chinese (zh)
Inventor
杨翠军
Original Assignee
上海移宇科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海移宇科技股份有限公司 filed Critical 上海移宇科技股份有限公司
Priority to PCT/CN2019/087342 priority Critical patent/WO2020232565A1/en
Priority to EP19929733.4A priority patent/EP3970767A4/en
Priority to US17/432,096 priority patent/US20220339763A1/en
Priority to CN201980093472.7A priority patent/CN113543823B/en
Priority to CN201911413566.6A priority patent/CN111939371B/en
Priority to US17/432,095 priority patent/US20220143304A1/en
Priority to PCT/CN2019/130442 priority patent/WO2020233128A1/en
Priority to EP19929277.2A priority patent/EP3969078A4/en
Priority to US17/431,426 priority patent/US20220118176A1/en
Priority to PCT/CN2020/090152 priority patent/WO2020233486A1/en
Priority to CN202010408078.2A priority patent/CN111939386B/en
Priority to CN202010408079.7A priority patent/CN111939387B/en
Priority to EP20810308.5A priority patent/EP3969079A4/en
Priority to EP20810250.9A priority patent/EP3969076A4/en
Priority to US17/434,009 priority patent/US20220133984A1/en
Priority to PCT/CN2020/090147 priority patent/WO2020233484A1/en
Priority to PCT/CN2020/103376 priority patent/WO2021135173A1/en
Priority to US17/785,410 priority patent/US20230011367A1/en
Priority to EP20910894.3A priority patent/EP4084842A4/en
Priority to CN202010723618.6A priority patent/CN113117190B/en
Priority to US17/923,915 priority patent/US20230173165A1/en
Priority to US17/924,120 priority patent/US20230173168A1/en
Priority to PCT/CN2020/111174 priority patent/WO2021227297A1/en
Priority to EP20935920.7A priority patent/EP4149584A1/en
Priority to PCT/CN2020/111181 priority patent/WO2021227298A1/en
Priority to EP20935996.7A priority patent/EP4149586A1/en
Priority to CN202010870560.8A priority patent/CN113663157A/en
Priority to CN202010870565.0A priority patent/CN113663158A/en
Priority to US17/924,118 priority patent/US20230173169A1/en
Priority to US17/785,406 priority patent/US20230022657A1/en
Priority to CN202010935510.3A priority patent/CN113663176B/en
Priority to PCT/CN2020/113976 priority patent/WO2021227312A1/en
Priority to EP20911099.8A priority patent/EP4084843A4/en
Priority to EP20935922.3A priority patent/EP4149585A1/en
Priority to PCT/CN2020/113980 priority patent/WO2021135359A1/en
Priority to PCT/CN2020/115206 priority patent/WO2021227321A1/en
Priority to US17/924,119 priority patent/US20230190186A1/en
Priority to EP20936044.5A priority patent/EP4149587A1/en
Priority to CN202010967412.8A priority patent/CN113663159B/en
Priority to PCT/CN2020/125031 priority patent/WO2022052248A1/en
Priority to CN202011196301.8A priority patent/CN114146252A/en
Publication of WO2020232565A1 publication Critical patent/WO2020232565A1/en
Priority to PCT/CN2021/093875 priority patent/WO2021228232A1/en
Priority to EP21804529.2A priority patent/EP4151251A1/en
Priority to CN202110528877.8A priority patent/CN113663166B/en
Priority to US17/924,350 priority patent/US20230173174A1/en
Priority to PCT/CN2021/102327 priority patent/WO2022052573A1/en
Priority to CN202110710446.3A priority patent/CN114146254B/en
Priority to CN202121610356.9U priority patent/CN215961542U/en
Priority to CN202110801124.XA priority patent/CN114146251A/en
Priority to PCT/CN2021/106456 priority patent/WO2022052621A1/en
Priority to EP21865677.5A priority patent/EP4210791A1/en
Priority to US18/024,278 priority patent/US20230256162A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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Definitions

  • the invention mainly relates to the field of medical equipment, and particularly relates to a drug infusion device.
  • a drug infusion device is a medical device device that continuously injects drugs into the patient's body to achieve the treatment of the patient's illness.
  • Drug infusion devices are widely used in the treatment of diabetes. Insulin is continuously infused into the patient's skin according to the dose required by the human body to simulate the secretory function of the pancreas, thereby maintaining the stability of the patient's blood sugar.
  • the medicinal fluid is usually stored inside the infusion pump.
  • the existing medical infusion device usually sticks the pump directly on the patient's body through medical tape, and the patient operates a remote device for infusion.
  • the current infusion equipment can only perform infusion in one gear, the infusion process cannot be flexibly controlled, and the infusion efficiency is relatively low.
  • the minimum dose that can be infused each time is relatively large, which causes the patient's body fluid level to fluctuate relatively greatly under the control of the infusion of the drug, and the purpose of more precise control of the body fluid level cannot be achieved.
  • the prior art urgently needs a drug infusion device that can flexibly control the drug infusion process and improve the efficiency of drug infusion.
  • the embodiment of the present invention discloses a medicine infusion device. More than two driving arms are arranged in the driving unit to realize the multi-speed pushing of the driving wheel, and finally achieve the purpose of multi-speed infusion and flexibly control the infusion process , Improve the efficiency of infusion.
  • the invention discloses a medicine infusion device, comprising: a medicine storage unit; a piston and a driving wheel respectively connected with a screw, the driving wheel pushes the screw to move through rotation, the piston is arranged in the medicine storage unit, and the screw pushes the piston to move; and
  • a drive unit matched with a drive wheel the drive unit includes more than two drive arms, the drive unit drives the drive arm to push the drive wheel in multiple gears through the rotation of multiple gears to perform multi-gear infusion; and and drive The power unit connected to the unit, the power unit exerts force on the drive unit to make the drive unit rotate in multiple gears.
  • the multiple gear rotation of the drive unit includes: after the drive unit rotates one or more gears in one direction once, it starts to rotate one or more gears in the other direction once until When the rotation in the other direction ends, the driving unit completes one rotation in two directions alternately to implement multi-speed pushing on the driving wheel.
  • the driving wheel includes a plurality of sub-wheels, the circumferential surface of the sub-wheel is provided with gear teeth, and the driving arm rotates the driving wheel by pushing the gear teeth.
  • a plurality of driving arms are respectively provided on both sides of the driving unit.
  • the multiple drive arms on the side intersect the lines in the pushing direction.
  • two driving arms are provided on both sides of the driving unit, and the two driving arms on one side of the driving unit are arranged up and down, or left and right.
  • the two drive arms on one side of the drive unit are arranged up and down, and when the drive arm on one side of the drive unit pushes the gear teeth, the angle between the two drive arms on the side of the line in the pushing direction is ⁇ , 0° ⁇ 7°.
  • ⁇ 3.5°.
  • the horizontal distance between the drive ends of the two drive arms on one side of the drive unit is h
  • the tooth pitch of the gear teeth is s
  • the gear teeth are ratchet teeth.
  • the drive unit drives the drive arm to alternately push and stop by rotating and stopping the rotation of multiple gears. Push the ratchet teeth to make the driving wheel rotate and stop rotating alternately to implement multi-speed push on the driving wheel.
  • At least one drive arm in the drive arm on the side that applies the pushing force pushes the gear teeth, and the drive arm on the other side of the drive unit does not apply to the gear teeth to rotate the drive wheel Power.
  • the multiple gears of the drive unit include a large gear and a small gear.
  • the drive unit can switch between the large gear and the small gear to realize different gears. Infusion.
  • the multiple gear positions of the drive unit further include one or more intermediate gear positions.
  • the intermediate gear position is between the large gear position and the small gear position.
  • the drive unit can be in the large gear position. Switch between gear, middle gear and small gear to realize infusion of different gears.
  • the drive unit includes more than two drive arms, and the drive unit drives the drive arm to push the drive wheel in multiple gears through the rotation of multiple gears to perform multi-gear infusion.
  • the cooperation of the driving unit and the driving wheel can realize the rotation of multiple gears, so that the driving arm uses multiple gears to push the driving wheel to rotate, thereby realizing the multi-stage infusion of medicine , Makes the infusion process more flexible and controllable, and significantly improves the efficiency of drug infusion.
  • the minimum amount of drug infusion is also reduced, the drug infusion is accurately controlled, and the large fluctuation of the patient's body fluid state is effectively avoided, and the patient can more precisely control and manage their own physiological state.
  • the multiple gear rotation of the drive unit includes: after the drive unit rotates one or more gears in one direction for a single time, it starts to rotate one or more gears in another direction at a time until the drive unit rotates in the other direction. At the end of the rotation, the drive unit completes one rotation in two directions alternately.
  • the drive unit can select the rotation mode of different gears according to actual needs, push the drive wheel to rotate in multiple gears, and then complete the multi-gear infusion of drugs, and the patient can control the infusion process more flexibly .
  • a plurality of driving arms are respectively provided on both sides of the driving unit. Multiple driving arms are provided on both sides to better realize the multi-speed pushing of the driving unit.
  • the multiple drive arms on this side intersect the lines in the pushing direction. Since the circumferential surface of the driving wheel is arc-shaped as a whole, the propelled tooth surfaces of adjacent gear teeth are not parallel to each other. The intersection of the lines in the driving direction of the multiple driving arms on one side can ensure that the driving arm is pushed The pushing direction is perpendicular to the pushing surface of the gear teeth, which improves the efficiency of pushing.
  • the gear teeth are ratchet teeth.
  • the drive unit drives the drive arm to alternately push and stop the ratchet teeth through the alternate action of rotation and stop rotation, so that the drive wheel alternately rotates and stops rotating, so as to The driving wheel implements multi-speed push.
  • the driving unit splits the infused medicine into smaller infusion amounts by rotating-stopping rotating-rotating -... to achieve precise infusion.
  • the multiple gear positions of the drive unit include a large gear position and a small gear position. Patients can freely choose and switch between large and small gears for infusion according to the actual infusion volume and infusion rate requirements, making the infusion process more flexible and controllable, and greatly improving the infusion efficiency.
  • the multiple gear positions of the drive unit also include one or more intermediate gear positions.
  • the set intermediate gear provides patients with more infusion options, and the patient has more flexible control over the infusion process.
  • FIG. 1 is a schematic top view of the structure of a medicine storage unit, a piston, a screw, a drive unit, a power unit, and a drive wheel in a medicine infusion device according to an embodiment of the present invention
  • 2a-2c are respectively a three-dimensional schematic diagram, a schematic side view structure, and a schematic top view structure of a driving unit in a drug infusion device according to an embodiment of the present invention
  • 3a-3b are schematic diagrams of a three-dimensional structure of a driving unit in a drug infusion device according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a three-dimensional structure of a driving unit in a medicine infusion device according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a three-dimensional structure of a driving unit in a drug infusion device according to another embodiment of the present invention.
  • Fig. 6 is a partial structural diagram of a driving wheel in a drug infusion device according to an embodiment of the present invention.
  • Fig. 7 is a schematic structural diagram of a driving unit in a medicine infusion device according to an embodiment of the present invention to push the driving wheel to rotate;
  • Fig. 8 is a structural schematic diagram of different gear rotation positions of a driving unit in a medicine infusion device according to an embodiment of the present invention.
  • the prior art infusion device has only one infusion mode and cannot control the infusion process flexibly.
  • the prior art drug infusion device can only push the driving wheel to rotate in one gear for infusion, and the driving unit cannot be rotated through multiple rotation-stops in the middle through one gear rotation.
  • the implementation of multi-stage promotion has resulted in a relatively single control of the infusion process in the prior art.
  • the present invention provides a medicine infusion device.
  • the driving unit rotates through multiple gears, and then pushes the drive wheel in multiple gears.
  • the patient flexibly controls the drug infusion process.
  • the minimum drug infusion amount of the infusion device is effectively reduced, and the fluctuation of the patient's body fluid state is reduced.
  • the drug infusion device includes a driving unit 100, a driving wheel 130, a medicine storage unit 150, a piston 160, a screw 170, and a power unit 180.
  • the screw 170 is connected to the piston 160 and the driving wheel 130 respectively.
  • the driving wheel 130 is movably arranged on the device base (not shown), and the driving wheel 130 pushes the screw 170 to move by rotating, and then pushes the piston 160 arranged in the medicine storage unit 150 to move forward to achieve The purpose of the injection.
  • the driving unit 100 is used to push the driving wheel 130 to rotate.
  • the driving unit 100 is movably connected to the base of the device through the rotating shaft 120.
  • the power unit 180 is used to apply force to the driving unit 100 to make the driving unit 100 rotate.
  • the power unit 180 is fixedly connected to the top position 140 of the drive unit 100, and the power unit 180 is further divided into two left and right parts, such as the A'direction part and the B'direction part in FIG.
  • the driving unit 100 is pulled alternately in the A'direction or the B'direction to rotate around the rotating shaft 120.
  • the power unit 180 pulls the driving unit 100 in the A'direction
  • the driving unit 100 rotates in the A direction around the rotating shaft 120.
  • the drive unit 100 rotates around the rotating shaft 120 in the B direction.
  • the driving unit 100 can be alternately rotated in the A direction and the B direction around the rotating shaft 120.
  • the power unit 180 is a shape memory alloy.
  • the A'-direction portion and the B'-direction portion of the shape memory alloy are alternately turned on and off, and the length of the shape memory alloy changes to exert a force on the drive unit 100.
  • the power unit 180 can be composed of a continuous shape memory alloy, or it can be composed of two left and right sections (such as A'direction section and B'direction section) shape memory alloy. There are no specific restrictions here, as long as the applied force can be satisfied.
  • the function of the driving unit 100 is only required to rotate.
  • the power unit 180 includes but is not limited to a shape memory alloy. In other embodiments of the present invention, the power unit 180 may also have other structures, and the position where the power unit 180 applies force to the drive unit 100 is also It is not limited to the top position 140 of the driving unit 100, as long as it can satisfy the condition that the force applied to the driving unit 100 makes the driving unit 100 rotate left and right alternately.
  • the driving unit 100 further includes more than two driving arms 110.
  • the driving wheel 130 includes a plurality of sub-wheels, and the circumferential surface of the sub-wheels is provided with gear teeth 131 (as shown in Figs. 6 and 7 below).
  • the drive unit 100 can drive the drive arm 110 to push the gear teeth 131 through multiple gear rotations, so that the drive wheel 130 performs Multi-speed rotation. Therefore, in the embodiment of the present invention, the driving unit 100 and the driving wheel 130 are used in conjunction.
  • matching means that the position of the driving wheel 130 and the number of sub-wheels need to be compatible with the working principle of the driving unit 100 and the number and position structure of the driving arm 110.
  • the driving unit 100 includes four driving arms 110, which are 110a, 110b, 110c, and 110d, respectively.
  • 110 a and 110 b are arranged on one side of the driving unit 100
  • 110 c and 110 d are arranged on the other side of the driving unit 100.
  • the driving wheel 130 includes two sub-wheels, one sub-wheel is matched with 110a and 110b, and the other sub-wheel is matched with 110c and 110d.
  • the driving wheel 130 may also include more than two sub-wheels.
  • two adjacent sub-wheels may be provided on one side of the driving unit 100 to cooperate with the driving The unit 100 has different positions and numbers of driving arms 110 on this side.
  • FIG. 2a, 2b, and 2c are a three-dimensional schematic diagram, a side view structural schematic diagram, and a top structural schematic diagram of the driving unit 100, respectively, and the top view direction of FIG. 2c is the direction indicated by the arrow in FIG. 2b, and the side view direction of FIG. 2b is The direction indicated by the arrow in Figure 2c.
  • the two driving arms 110 on one side of the driving unit 100 are arranged up and down.
  • the up and down arrangement refers to the representation of the up and down positional relationship shown in FIG. 2b.
  • the two driving arms 110 such as 110a and 110b
  • 110b and 110d are blocked by 110a and 110c, respectively, as The dashed lines in Figure 2c indicate 110b and 110d.
  • the driving wheel 130 since the driving wheel 130 is circular, the surfaces of adjacent gear teeth to which the pushing force is applied are not parallel. Therefore, in order to keep the drive arm 110 and the gear tooth pushing surface vertical during driving, thereby improving the pushing efficiency of the drive arm 110, when the drive arm 110 on one side of the drive unit 100 pushes the gear tooth 131, the two drive arms 110 on this side
  • the drive arm 110 on one side of the drive unit 100 pushes the gear teeth 131
  • the two drive arms 110 on this side return in a straight line in the pushing direction.
  • the angle ⁇ between l 1 and l 2 can be set according to the actual structure.
  • ⁇ can be set according to the diameter and number of the driving wheel 130, the number of gear teeth 131, the pitch of the screw 170, and the position of the driving arm 110.
  • the relationship and number are set.
  • ⁇ can also be between 0° and 3.1° or 4.1° ⁇ 7°, and there is no specific limitation here.
  • the two driving arms 110 on the side of the driving unit 100 are formed by folding at the dotted circle 10.
  • the two driving arms 110 on the side of the driving unit 100 can also be formed in other ways.
  • 210a and 210c at the upper position The 210b and 210d at the lower position are respectively arranged in different structural subunits.
  • the two structural sub-units are fixed together by welding or other connection methods to form an integrated structure.
  • the two structural sub-units are connected at the top position 340 of the driving unit 300, and then the top position 340 of the driving unit 300 is folded to form the structure of the driving arm 310 in the embodiment of the present invention.
  • the drive arm can also be formed in other ways, as long as the conditions for pushing the drive wheel to rotate can be met, and there is no specific limitation here.
  • FIG. 4 is a schematic top view of a driving unit 400 according to another embodiment of the present invention.
  • Figure 4 and Figure 2c are the same.
  • the two driving arms on one side of the driving unit 400 are arranged slightly shifted left and right, such as 410a, 410b, and 410c, 410d.
  • 410a and 410c are offset to the right
  • 410b and 410d are offset to the left.
  • the left-right offset of the two driving arms on the same side and the relative offset in which direction the two drive arms are offset need to be determined according to the actual structural design, and will not be specifically described here. limit.
  • the two driving arms on one side of the driving unit can also be arranged left and right.
  • the left and right arrangement means that from the perspective of Figure 4 (top view), you can see the two complete drive arms on one side of the drive unit, and at the same time, from the perspective of Figure 2b (side view), close to the main body of the drive unit
  • the driving arm is completely shielded or partially shielded by the driving arm far away from the main body of the driving unit.
  • the driving direction of the driving arm on the same side of the driving unit is coplanar or different.
  • FIG. 5 is a schematic diagram of a three-dimensional structure of a driving unit 500 according to another embodiment of the present invention.
  • the driving unit 500 includes six driving arms 510, three of which are arranged on one side of the driving unit 500, specifically: 510a, 510b, 510c are arranged on one side, and 510d, 510e, and 510f are arranged on the other side.
  • the length, the length relationship between the driving arms 510 and the position setting of the same side driving arm 510 are all designed according to the specific structure and working principle, and there is no specific limitation here.
  • the positional relationship of the three driving arms 510 on the same side of the driving unit 500 is similar to that in FIGS. 2a, 2b, and 2c, that is, the three driving arms 510 on the same side of the driving unit 500 are arranged up and down.
  • the total number of driving arms may also be an odd number, such as 3, 5 or more, that is, the number of driving arms on both sides of the driving unit is not equal.
  • the structural relationship between different driving arms can be similar to that described above, which is not specifically limited here.
  • FIG. 6 is a partial structural diagram of the driving wheel 130, and 131 is a gear tooth.
  • the horizontal distance between the driving ends of the two driving arms on the side of the driving unit 100 is h, and the pitch of the gear teeth 131 is s, then 0.5s ⁇ h ⁇ 1.5s.
  • h 0.8s.
  • h 1.2s.
  • h s.
  • the driving end of the driving arm 110 refers to the end of the driving arm 110 that directly contacts the gear teeth 131 when being pushed.
  • the horizontal distance refers to the planar distance between the driving ends of the two driving arms 110 on the same side of the driving unit 100 when viewed from the angle shown in FIG. 2c.
  • the driving wheel 130 is a ratchet wheel, and the gear teeth 131 are ratchet teeth.
  • the use of a ratchet can prevent the driving wheel 130 from reversing.
  • Each ratchet tooth surface includes a gentle surface and a steep surface, as shown in Figure 6.
  • the driving arm 110 of the driving unit 100 includes a part that pushes the driving wheel 130 to rotate and a part that does not push the driving wheel 130 to rotate. The part that pushes the driving wheel 130 to rotate applies the driving force to the steep surface of the ratchet tooth to push, so that the driving wheel 130 rotates in the C direction.
  • FIG. 7 is a schematic diagram of the three-dimensional structure of the cooperation of the driving unit 100 and the driving wheel 130.
  • FIG. 8 is a schematic diagram of the position structure of multiple gear positions of the driving unit 100 rotating.
  • the driving unit 100 rotates in one direction at a time.
  • a single rotation in the direction A 110a and/or 110b pushes the gear tooth 131 to rotate the driving wheel 130, and 110c and 110d can slide on the gear tooth 131 (such as on the soft surface of the ratchet tooth) Sliding, no force is applied to push the driving wheel 130 to rotate).
  • 110c slides to the next adjacent tooth first and makes a "click" sound.
  • the driving end of 110c acts on the steep surface of the ratchet tooth to prevent the driving wheel 130 from reversing.
  • the driving unit 100 can stop rotating, the driving arms 110a and/or 110b stop pushing the gear teeth 131, and the driving wheel 130 stops rotating.
  • a rotation drive unit 100 to complete a gear please refer to FIG. 8, when the driving unit 100 is rotated in the direction A to position A 1, A 1 i.e. reaching speed. The next moment the drive unit 100 continues to rotate in the A direction, 110d will slide to the next adjacent tooth, and also make a "click" sound. Similarly, the driving end of 110d acts on the steep surface of the ratchet teeth to prevent the driving wheel 130 from reversing.
  • the drive unit 100 has completed another gear rotation. Please refer to FIG. 8. At this time, the drive unit 100 rotates to the A 2 position, that is, reaches the A 2 gear. At this time, 110c and 110d each complete a sliding between adjacent gear teeth 131, and the drive unit 100 completes the entire process of a single rotation in the A direction to realize the rotation of the two gears A 1 and A 2 , thereby performing the driving wheel 130
  • the two-stage push makes the drug infusion device perform two-stage infusion.
  • 110d may also slide to the next gear tooth 131 first, and 110c and then slide to the next gear tooth 131, which is not specifically limited here.
  • the driving unit 100 rotates in the B direction, there will also be two rotations of B 1 and B 2 .
  • the driving unit 100 has undergone an alternating action of rotation and stop rotation.
  • the driving arm 110 alternately pushes and stops pushing the gear teeth 131, so that the driving wheel 130 Rotating and stopping the rotation alternately realizes the two-gear push of the driving wheel 130, and finally achieves the purpose of two-gear medicine infusion.
  • the driving unit 100 undergoes a rotation-stop rotation-rotation two-gear action to realize the opposite
  • the driving wheel 130 is driven by two gears.
  • the driving unit 100 undergoes a three-gear action of rotation-stop rotation-rotation-stop rotation-rotation to achieve Push the third gear of the driving wheel 130 to complete the third gear infusion.
  • the driving unit 100 realizes the multi-speed pushing of the driving wheel 130 through the multi-gear action of rotation-stop-spin-stop-spin-...-spin , Complete multiple infusions.
  • a driving gear unit 100 rotates in the direction A, i.e., A 1 reaches the speed, turn Rotate one gear or two gears in the B direction to reach the B 1 or B 2 gear until the rotation in the B direction stops.
  • the driving unit 100 completes one rotation in two directions alternately, so that the driving wheel 130 can be pushed in multiple gears. Therefore, in the embodiment of the present invention, the drive unit 100 can alternately switch gears to rotate between gears A 1 -B 1 or gears A 1 -B 1 -B 2 or gears B 1 -A 1 -A 2 , To achieve the purpose of switching different gears for infusion.
  • the driving unit 100 can also be directly rotated to the A 2 gear without passing through the A 1 gear. Then it directly rotates to the B 2 gear position without passing the B 1 gear position, that is, the driving unit 100 directly rotates alternately between the A 2 -B 2 gear positions. As described above, the driving unit 100 can also alternately rotate between the A 1 -B 1 gear positions. Obviously, in a unit time, the drug infusion amount when the driving unit 100 alternately rotates between the A 2 -B 2 gears is greater than the drug infusion amount when it alternately rotates between the A 1 -B 1 gears.
  • the drug infusion device of the embodiment of the present invention can reduce the minimum drug infusion amount and achieve precise control of the drug infusion.
  • the large gear A 2 -B 2 gear mode can be selected to speed up the infusion rate.
  • the patient can choose the small gear A 1 -B 1 gear mode to reduce the drug infusion rate and achieve precise control of the drug infusion.
  • the drug infusion device of the embodiment of the present invention implements multiple gears of the driving wheel by providing more than two drive arms on the drive unit, thereby achieving multi-stage drug infusion.
  • the patient can freely and flexibly switch different infusion gears according to the actual infusion volume and infusion rate requirements, thereby improving the infusion efficiency.
  • the drug infusion device can reduce the minimum drug infusion volume and achieve the goal of precise control of the infusion.
  • the patient when the infusion is started, the amount of drug infusion is relatively large, and the patient can select the large gear A 2 -B 2 shown in FIG. 8 for infusion. After a period of infusion, the intermediate gears A 1 -B 1 -B 2 or B 1 -A 1 -A 2 can be used to reduce the rate of drug infusion.
  • the patient can choose the small gears A 1 -B 1 for infusion to further reduce the infusion rate and achieve precise control of the drug infusion.
  • the patient can also choose one or several stalls for infusion, and there is no specific limitation here.
  • the drug infusion device when more than two driving arms 110 are provided on one side of the driving unit 100, the drug infusion device can have more and more precise infusion gears, and the patient can further flexibly control the infusion. Process, more precise control of the infusion.
  • the present invention discloses a medicine infusion device. More than two driving arms are arranged on the driving unit.
  • the driving unit pushes the driving wheel in multiple gears through the rotation of multiple gears, thereby realizing the
  • the multi-stage infusion of drugs increases the flexibility of patients to control the infusion process and improves the efficiency of drug infusion.
  • the drug infusion device also reduces the minimum amount of drug infusion, and the patient can precisely control the drug infusion and precisely manage their own physiological conditions.

Abstract

Disclosed is a drug infusion device. The drug infusion device comprises: a drug storage unit (150); a piston (160) and a driving wheel (130) respectively connected to a screw (170), wherein the driving wheel (130) rotates to push the screw (170) to move, the piston (160) is arranged in the drug storage unit (150), and the screw (170) pushes the piston (160) to move; a driving unit matching the driving wheel (130), wherein the driving unit comprises more than two driving arms (110), and the driving unit drives the driving arms (110), by means of multi-gear rotation, to achieve multi-gear pushing on the driving wheel (130) so as to perform multi-gear infusion; and a power unit (180) connected to the driving unit.

Description

药物输注装置Drug infusion device 技术领域Technical field
本发明主要涉及医疗器械领域，特别涉及一种药物输注装置。The invention mainly relates to the field of medical equipment, and particularly relates to a drug infusion device.
背景技术Background technique
药物输注装置是通过向患者体内持续注射药物，从而实现患者病症治疗的一种医疗器械装置。药物输注装置广泛的用于糖尿病的治疗，按照人体需要的剂量将胰岛素持续地输注到患者的皮下，以此来模拟胰腺的分泌功能，从而保持患者血糖的稳定。药物流体通常储存在输注泵体内部，现有的药物输注装置通常是将泵体直接通过医用胶布粘贴在患者身体上，患者操作远程设备进行输注。A drug infusion device is a medical device device that continuously injects drugs into the patient's body to achieve the treatment of the patient's illness. Drug infusion devices are widely used in the treatment of diabetes. Insulin is continuously infused into the patient's skin according to the dose required by the human body to simulate the secretory function of the pancreas, thereby maintaining the stability of the patient's blood sugar. The medicinal fluid is usually stored inside the infusion pump. The existing medical infusion device usually sticks the pump directly on the patient's body through medical tape, and the patient operates a remote device for infusion.
在进行药物输注时，目前现有的输注设备只能够在一个档位进行输注，输注过程不能灵活控制，输注效率比较低。且每次能够输注的最小剂量比较大，这导致患者的体液水平在输注药物的控制下波动比较大，不能够达到更加精确控制体液水平的目的。When performing drug infusion, the current infusion equipment can only perform infusion in one gear, the infusion process cannot be flexibly controlled, and the infusion efficiency is relatively low. Moreover, the minimum dose that can be infused each time is relatively large, which causes the patient's body fluid level to fluctuate relatively greatly under the control of the infusion of the drug, and the purpose of more precise control of the body fluid level cannot be achieved.
因此，现有技术亟需一种能够灵活控制药物输注过程，提高药物输注效率的药物输注装置。Therefore, the prior art urgently needs a drug infusion device that can flexibly control the drug infusion process and improve the efficiency of drug infusion.
发明内容Summary of the invention
本发明实施例公开了一种药物输注装置，在驱动单元中设置多于两个驱动臂，进而实现对驱动轮的多档推动，最终达到多档输注的目的，灵活控制了输注过程，提高了输注效率。The embodiment of the present invention discloses a medicine infusion device. More than two driving arms are arranged in the driving unit to realize the multi-speed pushing of the driving wheel, and finally achieve the purpose of multi-speed infusion and flexibly control the infusion process , Improve the efficiency of infusion.
本发明公开了一种药物输注装置，包括：储药单元；分别与螺杆相连接的活塞和驱动轮，驱动轮通过转动推动螺杆运动，活塞设置于储药单元中，螺杆推动活塞运动；与驱动轮相配合的驱动单元，驱动单元包括多于两个驱动臂，驱动单元通过多个档位的转动带动驱动臂对驱动轮实施多档位推动，以进行多档位输注；和与驱动单元相连接的动力单元，动力单元对驱动单元施加力的作用使驱动单元进行多个档位的转动。The invention discloses a medicine infusion device, comprising: a medicine storage unit; a piston and a driving wheel respectively connected with a screw, the driving wheel pushes the screw to move through rotation, the piston is arranged in the medicine storage unit, and the screw pushes the piston to move; and A drive unit matched with a drive wheel, the drive unit includes more than two drive arms, the drive unit drives the drive arm to push the drive wheel in multiple gears through the rotation of multiple gears to perform multi-gear infusion; and and drive The power unit connected to the unit, the power unit exerts force on the drive unit to make the drive unit rotate in multiple gears.
根据本发明的一个方面，驱动单元的多个档位转动包括：驱动单元单次向一个方向转动一个或多个档位后，开始单次向另一个方向转动一个或多个档位，直至向另一方向的转动结束，驱动单元完成一次向两个方向的交替转动，以对驱动轮实施多档推动。According to one aspect of the present invention, the multiple gear rotation of the drive unit includes: after the drive unit rotates one or more gears in one direction once, it starts to rotate one or more gears in the other direction once until When the rotation in the other direction ends, the driving unit completes one rotation in two directions alternately to implement multi-speed pushing on the driving wheel.
根据本发明的一个方面，驱动轮包括多个子轮，子轮的圆周表面设置有轮 齿，驱动臂通过推动轮齿使驱动轮转动。According to one aspect of the present invention, the driving wheel includes a plurality of sub-wheels, the circumferential surface of the sub-wheel is provided with gear teeth, and the driving arm rotates the driving wheel by pushing the gear teeth.
根据本发明的一个方面，驱动单元的两侧分别设置多个驱动臂。According to an aspect of the present invention, a plurality of driving arms are respectively provided on both sides of the driving unit.
根据本发明的一个方面，当驱动单元一侧的驱动臂推动轮齿时，该侧多个驱动臂在推动方向所在的直线相交。According to one aspect of the present invention, when the drive arm on one side of the drive unit pushes the gear teeth, the multiple drive arms on the side intersect the lines in the pushing direction.
根据本发明的一个方面，驱动单元两侧分别设置两个驱动臂，位于驱动单元一侧的两个驱动臂呈上下设置，或者呈左右设置。According to one aspect of the present invention, two driving arms are provided on both sides of the driving unit, and the two driving arms on one side of the driving unit are arranged up and down, or left and right.
根据本发明的一个方面，驱动单元一侧的两个驱动臂呈上下设置，当驱动单元一侧的驱动臂推动轮齿时，该侧两个驱动臂在推动方向所在直线的夹角为α，0°≤α≤7°。According to one aspect of the present invention, the two drive arms on one side of the drive unit are arranged up and down, and when the drive arm on one side of the drive unit pushes the gear teeth, the angle between the two drive arms on the side of the line in the pushing direction is α, 0°≤α≤7°.
根据本发明的一个方面，3.1°≤α≤4.1°。According to an aspect of the present invention, 3.1°≤α≤4.1°.
根据本发明的一个方面，α＝3.5°。According to one aspect of the present invention, α=3.5°.
根据本发明的一个方面，驱动单元一侧的两个驱动臂驱动端的水平距离为h，轮齿的齿距为s，0.1s≤h≤2.5s。According to one aspect of the present invention, the horizontal distance between the drive ends of the two drive arms on one side of the drive unit is h, the tooth pitch of the gear teeth is s, and 0.1s≤h≤2.5s.
根据本发明的一个方面，0.5s≤h≤1.5s。According to an aspect of the present invention, 0.5s≤h≤1.5s.
根据本发明的一个方面，轮齿为棘轮齿，驱动单元单次向一个方向转动的整个过程中，驱动单元通过多个档位的转动和停止转动的交替动作，带动驱动臂交替地推动和停止推动棘轮齿，使驱动轮交替地转动和停止转动，以对驱动轮实施多档推动。According to one aspect of the present invention, the gear teeth are ratchet teeth. During the entire process of the drive unit rotating in one direction at a time, the drive unit drives the drive arm to alternately push and stop by rotating and stopping the rotation of multiple gears. Push the ratchet teeth to make the driving wheel rotate and stop rotating alternately to implement multi-speed push on the driving wheel.
根据本发明的一个方面，当驱动单元推动驱动轮时，施加推动力一侧的驱动臂中至少有一个驱动臂推动轮齿，而驱动单元另一侧的驱动臂不对轮齿施加使驱动轮转动的力。According to one aspect of the present invention, when the drive unit pushes the drive wheel, at least one drive arm in the drive arm on the side that applies the pushing force pushes the gear teeth, and the drive arm on the other side of the drive unit does not apply to the gear teeth to rotate the drive wheel Power.
根据本发明的一个方面，驱动单元的多个档位包括大档位和小档位，在进行输注时，驱动单元可在大档位和小档位之间切换转动，以实现不同档位的输注。According to one aspect of the present invention, the multiple gears of the drive unit include a large gear and a small gear. During infusion, the drive unit can switch between the large gear and the small gear to realize different gears. Infusion.
根据本发明的一个方面，驱动单元的多个档位还包括一个或多个中间档位，中间档位介于大档位和小档位之间，在进行输注时，驱动单元可在大档位、中间档位和小档位之间切换转动，以实现不同档位的输注。According to one aspect of the present invention, the multiple gear positions of the drive unit further include one or more intermediate gear positions. The intermediate gear position is between the large gear position and the small gear position. During infusion, the drive unit can be in the large gear position. Switch between gear, middle gear and small gear to realize infusion of different gears.
与现有技术相比，本发明的技术方案具备以下优点：Compared with the prior art, the technical solution of the present invention has the following advantages:
本发明公开的药物输注装置中，驱动单元包括多于两个驱动臂，驱动单元通过多个档位的转动带动驱动臂对驱动轮实施多档位推动，以进行多档位输注。驱动单元上设置多于两个驱动臂后，驱动单元与驱动轮相配合可以实现多档位的转动，使得驱动臂利用多个档位推动驱动轮转动，进而实现对药物的多档位 输注，使得输注过程更加灵活可控，显著提高药物输注效率。同时，也降低了最小药物输注量，精确控制药物的输注，有效避免患者体液状态的较大波动，患者能够更加精密地控制和管理自身的生理状态。In the medicine infusion device disclosed in the present invention, the drive unit includes more than two drive arms, and the drive unit drives the drive arm to push the drive wheel in multiple gears through the rotation of multiple gears to perform multi-gear infusion. After more than two driving arms are provided on the driving unit, the cooperation of the driving unit and the driving wheel can realize the rotation of multiple gears, so that the driving arm uses multiple gears to push the driving wheel to rotate, thereby realizing the multi-stage infusion of medicine , Makes the infusion process more flexible and controllable, and significantly improves the efficiency of drug infusion. At the same time, the minimum amount of drug infusion is also reduced, the drug infusion is accurately controlled, and the large fluctuation of the patient's body fluid state is effectively avoided, and the patient can more precisely control and manage their own physiological state.
进一步的，驱动单元的多个档位转动包括：驱动单元单次向一个方向转动一个或多个档位后，开始单次向另一个方向转动一个或多个档位，直至向另一方向的转动结束，驱动单元完成一次向两个方向的交替转动。当设置多个转动档位后，驱动单元能够根据实际需要选择不同档位的转动模式，推动驱动轮多档转动，进而完成对药物的多档位输注，患者能够更加灵活的控制输注过程。Further, the multiple gear rotation of the drive unit includes: after the drive unit rotates one or more gears in one direction for a single time, it starts to rotate one or more gears in another direction at a time until the drive unit rotates in the other direction. At the end of the rotation, the drive unit completes one rotation in two directions alternately. When multiple rotation gears are set, the drive unit can select the rotation mode of different gears according to actual needs, push the drive wheel to rotate in multiple gears, and then complete the multi-gear infusion of drugs, and the patient can control the infusion process more flexibly .
进一步的，本发明药物输注装置中驱动单元的两侧分别设置多个驱动臂。两侧分别设置多个驱动臂能够较好实现驱动单元的多档推动。Further, in the drug infusion device of the present invention, a plurality of driving arms are respectively provided on both sides of the driving unit. Multiple driving arms are provided on both sides to better realize the multi-speed pushing of the driving unit.
进一步的，在本发明方案中，当驱动单元一侧的驱动臂推动轮齿时，该侧多个驱动臂在推动方向所在的直线相交。由于驱动轮圆周表面整体呈圆弧形，相邻轮齿的被推动的齿面之间并不是相互平行的，一侧多个驱动臂在推动方向所在的直线相交能够保证在推动时，驱动臂的推动方向与轮齿推动面相垂直，提高推动的效率。Further, in the solution of the present invention, when the drive arm on one side of the drive unit pushes the gear teeth, the multiple drive arms on this side intersect the lines in the pushing direction. Since the circumferential surface of the driving wheel is arc-shaped as a whole, the propelled tooth surfaces of adjacent gear teeth are not parallel to each other. The intersection of the lines in the driving direction of the multiple driving arms on one side can ensure that the driving arm is pushed The pushing direction is perpendicular to the pushing surface of the gear teeth, which improves the efficiency of pushing.
进一步的，本发明的技术方案中，轮齿为棘轮齿。在和驱动臂相互配合的使用下，采用棘轮齿能够有效防止驱动轮反转。另外，驱动单元单次向一个方向转动的整个过程中，驱动单元通过转动和停止转动的交替动作，带动驱动臂交替地推动和停止推动棘轮齿，使驱动轮交替地转动和停止转动，以对驱动轮实施多档推动。在单次向一个方向转动的整个过程中，驱动单元通过转动-停止转动-转动-…相交替的方式，将输注的药物割裂为更小的输注量，进而实现精确输注。Further, in the technical solution of the present invention, the gear teeth are ratchet teeth. When used in conjunction with the driving arm, the use of ratchet teeth can effectively prevent the driving wheel from reversing. In addition, during the entire process when the drive unit rotates in one direction at a time, the drive unit drives the drive arm to alternately push and stop the ratchet teeth through the alternate action of rotation and stop rotation, so that the drive wheel alternately rotates and stops rotating, so as to The driving wheel implements multi-speed push. During the whole process of a single rotation in one direction, the driving unit splits the infused medicine into smaller infusion amounts by rotating-stopping rotating-rotating -... to achieve precise infusion.
进一步的，驱动单元的多个档位包括大档位和小档位。患者可以根据实际的输注量和输注速率的需求，自由选择和切换大档位或小档位进行输注，使得输注过程更加灵活可控，大大提高了输注效率。Further, the multiple gear positions of the drive unit include a large gear position and a small gear position. Patients can freely choose and switch between large and small gears for infusion according to the actual infusion volume and infusion rate requirements, making the infusion process more flexible and controllable, and greatly improving the infusion efficiency.
进一步的，驱动单元的多个档位还包括一个或多个中间档位。设置的中间档位为患者提供更多的输注选择，患者对输注过程的控制更加灵活。Further, the multiple gear positions of the drive unit also include one or more intermediate gear positions. The set intermediate gear provides patients with more infusion options, and the patient has more flexible control over the infusion process.
附图说明Description of the drawings
图1为根据本发明一个实施例的药物输注装置中储药单元、活塞、螺杆、驱动单元、动力单元和驱动轮结构的俯视示意图；1 is a schematic top view of the structure of a medicine storage unit, a piston, a screw, a drive unit, a power unit, and a drive wheel in a medicine infusion device according to an embodiment of the present invention;
图2a-图2c分别为根据本发明一个实施例的药物输注装置中驱动单元的立体结构示意图、侧视结构示意图和俯视结构示意图；2a-2c are respectively a three-dimensional schematic diagram, a schematic side view structure, and a schematic top view structure of a driving unit in a drug infusion device according to an embodiment of the present invention;
图3a-图3b为根据本发明另一个实施例的药物输注装置中驱动单元的立体结构示意图；3a-3b are schematic diagrams of a three-dimensional structure of a driving unit in a drug infusion device according to another embodiment of the present invention;
图4为根据本发明又一个实施例的药物输注装置中驱动单元的立体结构示意图；4 is a schematic diagram of a three-dimensional structure of a driving unit in a medicine infusion device according to another embodiment of the present invention;
图5为根据本发明再一个实施例的药物输注装置中驱动单元的立体结构示意图；5 is a schematic diagram of a three-dimensional structure of a driving unit in a drug infusion device according to another embodiment of the present invention;
图6为根据本发明一个实施例的药物输注装置中驱动轮的局部结构示意图；Fig. 6 is a partial structural diagram of a driving wheel in a drug infusion device according to an embodiment of the present invention;
图7为根据本发明一个实施例的药物输注装置中驱动单元推动驱动轮转动的结构示意图；Fig. 7 is a schematic structural diagram of a driving unit in a medicine infusion device according to an embodiment of the present invention to push the driving wheel to rotate;
图8为根据本发明一个实施例的药物输注装置中驱动单元不同档位转动位置的结构示意图。Fig. 8 is a structural schematic diagram of different gear rotation positions of a driving unit in a medicine infusion device according to an embodiment of the present invention.
具体实施方式Detailed ways
如前所述，现有技术的输注器件只有一个档位的输注模式，不能灵活控制输注过程。As mentioned above, the prior art infusion device has only one infusion mode and cannot control the infusion process flexibly.
经研究发现，造成上述问题的原因为：现有技术的药物输注设备只能够一档推动驱动轮转动以进行输注，驱动单元通过一个档位转动不能够在中间经过多次旋-停而实施多档推动，导致现有技术对输注过程的控制比较单一。After research, it is found that the reason for the above-mentioned problem is: the prior art drug infusion device can only push the driving wheel to rotate in one gear for infusion, and the driving unit cannot be rotated through multiple rotation-stops in the middle through one gear rotation. The implementation of multi-stage promotion has resulted in a relatively single control of the infusion process in the prior art.
为了解决该问题，本发明提供了一种药物输注装置，驱动单元通过多档位转动，进而对驱动轮实施多档推动。对多个档位的切换和选择，患者灵活控制了药物的输注过程。同时有效降低了该输注设备的最小药物输注量，减弱了患者体液状态的波动。In order to solve this problem, the present invention provides a medicine infusion device. The driving unit rotates through multiple gears, and then pushes the drive wheel in multiple gears. With the switching and selection of multiple gears, the patient flexibly controls the drug infusion process. At the same time, the minimum drug infusion amount of the infusion device is effectively reduced, and the fluctuation of the patient's body fluid state is reduced.
现在将参照附图来详细描述本发明的各种示例性实施例。应理解，除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不应被理解为对本发明范围的限制。Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that, unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments should not be construed as limiting the scope of the present invention.
此外，应当理解，为了便于描述，附图中所示出的各个部件的尺寸并不必然按照实际的比例关系绘制，例如某些层的厚度或宽度可以相对于其他层有所放大。In addition, it should be understood that, for ease of description, the dimensions of the various components shown in the drawings are not necessarily drawn in accordance with actual proportional relationships. For example, the thickness or width of some layers may be enlarged relative to other layers.
以下对示例性实施例的描述仅仅是说明性的，在任何意义上都不作为对本发明及其应用或使用的任何限制。这里对于相关领域普通技术人员已知的技术、方法和装置可能不作详细讨论，但在适用这些技术、方法和装置情况下，这些技术、方法和装置应当被视为本说明书的一部分。The following description of the exemplary embodiments is merely illustrative, and in no sense is not taken as any limitation on the present invention and its application or use. The technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail here, but when these technologies, methods, and devices are applied, these technologies, methods, and devices should be regarded as part of this specification.
应注意，相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义或说明，则在随后的附图说明中将不需要对其进行进一步讨论。It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be further discussed in the subsequent description of the drawings. .
图1为本发明实施例的药物输注装置结构的俯视示意图，药物输注装置包括了驱动单元100、驱动轮130、储药单元150、活塞160、螺杆170以及动力单元180。1 is a schematic top view of the structure of a drug infusion device according to an embodiment of the present invention. The drug infusion device includes a driving unit 100, a driving wheel 130, a medicine storage unit 150, a piston 160, a screw 170, and a power unit 180.
螺杆170分别与活塞160和驱动轮130相连接。在本发明实施例中，驱动轮130活动设置于装置底座(未示出)上，驱动轮130通过转动推动螺杆170运动，进而推动设置于储药单元150中的活塞160向前运动，以达到注射药物的目的。The screw 170 is connected to the piston 160 and the driving wheel 130 respectively. In the embodiment of the present invention, the driving wheel 130 is movably arranged on the device base (not shown), and the driving wheel 130 pushes the screw 170 to move by rotating, and then pushes the piston 160 arranged in the medicine storage unit 150 to move forward to achieve The purpose of the injection.
驱动单元100用于推动驱动轮130转动。驱动单元100通过转轴120活动连接于装置底座上。动力单元180用于对驱动单元100施加力的作用，使得驱动单元100转动。在本发明的实施例中，动力单元180固定连接在驱动单元100的顶部位置140处，进而将动力单元180分为左右两个部分，如图1中A’方向部分和B’方向部分，进而在A’方向或者B’方向上交替拉动驱动单元100绕着转轴120转动。具体的，在本发明实施例中，当动力单元180在A’方向拉动驱动单元100时，驱动单元100绕着转轴120向A方向转动。当动力单元180在B’方向拉动驱动单元100时，驱动单元100绕着转轴120向B方向转动。通过在A’方向和B’方向上交替拉动驱动单元100，可以实现驱动单元100绕着转轴120向A方向和B方向交替转动。The driving unit 100 is used to push the driving wheel 130 to rotate. The driving unit 100 is movably connected to the base of the device through the rotating shaft 120. The power unit 180 is used to apply force to the driving unit 100 to make the driving unit 100 rotate. In the embodiment of the present invention, the power unit 180 is fixedly connected to the top position 140 of the drive unit 100, and the power unit 180 is further divided into two left and right parts, such as the A'direction part and the B'direction part in FIG. The driving unit 100 is pulled alternately in the A'direction or the B'direction to rotate around the rotating shaft 120. Specifically, in the embodiment of the present invention, when the power unit 180 pulls the driving unit 100 in the A'direction, the driving unit 100 rotates in the A direction around the rotating shaft 120. When the power unit 180 pulls the drive unit 100 in the B'direction, the drive unit 100 rotates around the rotating shaft 120 in the B direction. By alternately pulling the driving unit 100 in the A'direction and the B'direction, the driving unit 100 can be alternately rotated in the A direction and the B direction around the rotating shaft 120.
具体的，在本发明实施例中，动力单元180为形状记忆合金。形状记忆合金A’方向部分和B’方向部分被交替通断电，进而通过其长度的变化，对驱动单元100施加力的作用。动力单元180可以由一根连续的形状记忆合金构成，也可以由左右两段(如A’方向段和B’方向段)形状记忆合金组成，在这里并不做具体限制，只要能够满足施加力的作用进而使驱动单元100转动的条件即可。Specifically, in the embodiment of the present invention, the power unit 180 is a shape memory alloy. The A'-direction portion and the B'-direction portion of the shape memory alloy are alternately turned on and off, and the length of the shape memory alloy changes to exert a force on the drive unit 100. The power unit 180 can be composed of a continuous shape memory alloy, or it can be composed of two left and right sections (such as A'direction section and B'direction section) shape memory alloy. There are no specific restrictions here, as long as the applied force can be satisfied. The function of the driving unit 100 is only required to rotate.
在这里，需要说明的是，动力单元180包括但不限于形状记忆合金，在本发明的其它实施例中，动力单元180还可以是其他结构，而且动力单元180对驱动单元100施力的位置也不限于在驱动单元100的顶部位置140，只要能够满足对驱动单元100施加力的作用使驱动单元100左右交替转动的条件即可。Here, it should be noted that the power unit 180 includes but is not limited to a shape memory alloy. In other embodiments of the present invention, the power unit 180 may also have other structures, and the position where the power unit 180 applies force to the drive unit 100 is also It is not limited to the top position 140 of the driving unit 100, as long as it can satisfy the condition that the force applied to the driving unit 100 makes the driving unit 100 rotate left and right alternately.
请结合参考图2a所示的驱动单元100立体结构示意图，驱动单元100还包括多于两个驱动臂110。驱动轮130包括多个子轮，子轮的圆周表面设置有 轮齿131(如下文图6和图7所示)。再结合图1和图2a所示的结构，当驱动单元100一侧设置多个驱动臂110，驱动单元100能够通过多个档位转动带动驱动臂110推动轮齿131，以使驱动轮130进行多档转动。因此，在本发明的实施例中，驱动单元100和驱动轮130是相配合使用的。在这里，相配合是指驱动轮130的位置、子轮的数目需要与驱动单元100的工作原理以及驱动臂110的数目、位置结构相适应。Please refer to the schematic diagram of the three-dimensional structure of the driving unit 100 shown in FIG. 2 a, the driving unit 100 further includes more than two driving arms 110. The driving wheel 130 includes a plurality of sub-wheels, and the circumferential surface of the sub-wheels is provided with gear teeth 131 (as shown in Figs. 6 and 7 below). In combination with the structure shown in Figures 1 and 2a, when multiple drive arms 110 are provided on one side of the drive unit 100, the drive unit 100 can drive the drive arm 110 to push the gear teeth 131 through multiple gear rotations, so that the drive wheel 130 performs Multi-speed rotation. Therefore, in the embodiment of the present invention, the driving unit 100 and the driving wheel 130 are used in conjunction. Here, matching means that the position of the driving wheel 130 and the number of sub-wheels need to be compatible with the working principle of the driving unit 100 and the number and position structure of the driving arm 110.
如图1和图2a所示，在本发明的实施例中，多个驱动臂110分别设置于驱动单元100的两侧。因此，多个子轮也分别设置于驱动单元100两侧，以配合驱动臂110使用。具体的，在本发明实施例中，驱动单元100包括4个驱动臂110，分别为110a、110b、110c、110d。其中110a、110b设置于驱动单元100的一侧，110c、110d设置于驱动单元100的另一侧。驱动轮130包括两个子轮，一个子轮与110a、110b相配合，另一个子轮与110c、110d相配合。As shown in FIGS. 1 and 2a, in the embodiment of the present invention, a plurality of driving arms 110 are respectively disposed on both sides of the driving unit 100. Therefore, a plurality of sub-wheels are also respectively arranged on both sides of the driving unit 100 to cooperate with the driving arm 110. Specifically, in the embodiment of the present invention, the driving unit 100 includes four driving arms 110, which are 110a, 110b, 110c, and 110d, respectively. 110 a and 110 b are arranged on one side of the driving unit 100, and 110 c and 110 d are arranged on the other side of the driving unit 100. The driving wheel 130 includes two sub-wheels, one sub-wheel is matched with 110a and 110b, and the other sub-wheel is matched with 110c and 110d.
这里需要说明的是，驱动轮130还可以包括多于两个子轮，如根据多个驱动臂110位置结构的设计，可以在驱动单元100一侧设置两个相邻的子轮，以配合位于驱动单元100该侧不同位置和数量的驱动臂110。It should be noted here that the driving wheel 130 may also include more than two sub-wheels. For example, according to the design of the position structure of multiple driving arms 110, two adjacent sub-wheels may be provided on one side of the driving unit 100 to cooperate with the driving The unit 100 has different positions and numbers of driving arms 110 on this side.
图2a、图2b和图2c分别为驱动单元100的立体结构示意图、侧视结构示意图和俯视结构示意图，且图2c的俯视方向为图2b中箭头所示的方向，图2b的侧视方向为图2c中箭头所示的方向。2a, 2b, and 2c are a three-dimensional schematic diagram, a side view structural schematic diagram, and a top structural schematic diagram of the driving unit 100, respectively, and the top view direction of FIG. 2c is the direction indicated by the arrow in FIG. 2b, and the side view direction of FIG. 2b is The direction indicated by the arrow in Figure 2c.
在本发明的实施例中，位于驱动单元100一侧的两个驱动臂110呈上下设置。在这里，上下设置是指图2b中所示的上下位置关系表示。具体的，是指在侧视图图2b中能够看到驱动单元100一侧的两个驱动臂110(如110a和110b)，而在俯视图图2c中，110b和110d分别被110a和110c遮挡，如图2c中虚线表示的110b和110d。In the embodiment of the present invention, the two driving arms 110 on one side of the driving unit 100 are arranged up and down. Here, the up and down arrangement refers to the representation of the up and down positional relationship shown in FIG. 2b. Specifically, it means that the two driving arms 110 (such as 110a and 110b) on the side of the driving unit 100 can be seen in the side view of FIG. 2b, while in the top view of FIG. 2c, 110b and 110d are blocked by 110a and 110c, respectively, as The dashed lines in Figure 2c indicate 110b and 110d.
在本发明的实施例中，由于驱动轮130为圆形，相邻轮齿被施加推动力的表面并不平行。因此为了在驱动时驱动臂110和轮齿推动面保持垂直，进而提高驱动臂110的推动效率，当驱动单元100一侧的驱动臂110推动轮齿131时，该侧的两个驱动臂110在推动方向所在的直线相交。具体的，如图2b所示，当轮齿131被110a和/或110b推动时，110a所在的直线为l 1，110b所在的直线为l 2，l 1和l 2的夹角为α，3.1°≤α≤4.1°。具体的，在本发明实施例中，α＝3.5°。在本发明的另一个实施例中，α＝3.3°。在本发明的又一个实施例中，α＝3.9°。 In the embodiment of the present invention, since the driving wheel 130 is circular, the surfaces of adjacent gear teeth to which the pushing force is applied are not parallel. Therefore, in order to keep the drive arm 110 and the gear tooth pushing surface vertical during driving, thereby improving the pushing efficiency of the drive arm 110, when the drive arm 110 on one side of the drive unit 100 pushes the gear tooth 131, the two drive arms 110 on this side The lines of the pushing direction intersect. Specifically, as shown in Figure 2b, when the gear tooth 131 is pushed by 110a and/or 110b, the line where 110a is located is l 1 , the line where 110b is located is l 2 , and the angle between l 1 and l 2 is α, 3.1 °≤α≤4.1°. Specifically, in the embodiment of the present invention, α=3.5°. In another embodiment of the present invention, α=3.3°. In yet another embodiment of the present invention, α=3.9°.
需要说明的是，在本发明的其它实施例中，根据不同的结构设计，当驱动单元100一侧的驱动臂110推动轮齿131时，该侧的两个驱动臂110在推动方 向所在直线还可以平行(α＝0°)或者异面，同样可以推动驱动轮130转动，达到输注药物的目的。此时，l 1和l 2的夹角α可根据实际的结构而设定，如α可根据驱动轮130的直径和数量、轮齿131的数目、螺杆170的节距以及驱动臂110的位置关系和数目而设定，如α还可以介于0°～3.1°之间或者4.1°＜α≤7°，在这里并不做具体限制。 It should be noted that, in other embodiments of the present invention, according to different structural designs, when the drive arm 110 on one side of the drive unit 100 pushes the gear teeth 131, the two drive arms 110 on this side return in a straight line in the pushing direction. It can be parallel (α=0°) or different planes, and the driving wheel 130 can also be pushed to rotate to achieve the purpose of infusing medicine. At this time, the angle α between l 1 and l 2 can be set according to the actual structure. For example, α can be set according to the diameter and number of the driving wheel 130, the number of gear teeth 131, the pitch of the screw 170, and the position of the driving arm 110. The relationship and number are set. For example, α can also be between 0° and 3.1° or 4.1°<α≤7°, and there is no specific limitation here.
如图2a和图2b的虚线圈10部位所示，在本发明实施例中，位于驱动单元100一侧的两个驱动臂110是在虚线圈10处经过翻折形成的。在本发明的其它实施例中，位于驱动单元100一侧的两个驱动臂110还可以通过其它方式形成，如图3a和3b所示的驱动单元立体结构示意图中，位于上方位置的210a、210c与下方位置的210b、210d分别设置于不同结构子单元中。如在图3a中，两个结构子单元通过焊接或其他的连接方式被固定在一起，成为一体结构。再如图3b所示，两个结构子单元在驱动单元300的顶部位置340处相连接，再将驱动单元300的顶部位置340经过翻折形成本发明实施例中驱动臂310的结构。As shown by the dotted circle 10 in FIGS. 2a and 2b, in the embodiment of the present invention, the two driving arms 110 on the side of the driving unit 100 are formed by folding at the dotted circle 10. In other embodiments of the present invention, the two driving arms 110 on the side of the driving unit 100 can also be formed in other ways. In the three-dimensional structural diagram of the driving unit as shown in FIGS. 3a and 3b, 210a and 210c at the upper position The 210b and 210d at the lower position are respectively arranged in different structural subunits. As in Figure 3a, the two structural sub-units are fixed together by welding or other connection methods to form an integrated structure. As shown in FIG. 3b, the two structural sub-units are connected at the top position 340 of the driving unit 300, and then the top position 340 of the driving unit 300 is folded to form the structure of the driving arm 310 in the embodiment of the present invention.
需要说明的是，在本发明的其它实施例中，驱动臂还可以通过其它的方式形成，只要能够满足推动驱动轮转动的条件即可，这里并不做具体限制。It should be noted that, in other embodiments of the present invention, the drive arm can also be formed in other ways, as long as the conditions for pushing the drive wheel to rotate can be met, and there is no specific limitation here.
请参考图4，为本发明另一个实施例的驱动单元400俯视示意图。Please refer to FIG. 4, which is a schematic top view of a driving unit 400 according to another embodiment of the present invention.
图4和图2c的视角相同。结合图2a、图2b、图2c和图4，明显的，驱动单元400一侧的两个驱动臂呈左右稍稍错位设置，如410a、410b以及410c、410d。具体的，在本发明的一个实施例中，410a和410c向右偏移，410b和410d向左偏移。The viewing angles of Figure 4 and Figure 2c are the same. With reference to FIGS. 2a, 2b, 2c and 4, it is obvious that the two driving arms on one side of the driving unit 400 are arranged slightly shifted left and right, such as 410a, 410b, and 410c, 410d. Specifically, in an embodiment of the present invention, 410a and 410c are offset to the right, and 410b and 410d are offset to the left.
需要说明的是，在本发明的其他实施例中，同一侧的两个驱动臂的左右偏移量以及两者相对向哪一个方向偏移，需要根据实际结构设计而定，在这里并不作具体限制。进一步的，在本发明的一个实施例中，驱动单元一侧的两个驱动臂还可以左右设置。在这里，左右设置是指从如图4的视角下(俯视)，能够看到驱动单元一侧两个完整的驱动臂，同时从如图2b的视角下(侧视)，靠近驱动单元主体的驱动臂被远离驱动单元主体的驱动臂全部遮挡，或者部分遮挡，此时，驱动单元同侧驱动臂推动方向所在直线共面或者异面。同时，对驱动臂的长度以及不同驱动臂之间的长度关系不做具体限制。It should be noted that, in other embodiments of the present invention, the left-right offset of the two driving arms on the same side and the relative offset in which direction the two drive arms are offset need to be determined according to the actual structural design, and will not be specifically described here. limit. Further, in an embodiment of the present invention, the two driving arms on one side of the driving unit can also be arranged left and right. Here, the left and right arrangement means that from the perspective of Figure 4 (top view), you can see the two complete drive arms on one side of the drive unit, and at the same time, from the perspective of Figure 2b (side view), close to the main body of the drive unit The driving arm is completely shielded or partially shielded by the driving arm far away from the main body of the driving unit. At this time, the driving direction of the driving arm on the same side of the driving unit is coplanar or different. At the same time, there are no specific restrictions on the length of the driving arm and the length relationship between different driving arms.
请参考图5，为本发明又一个实施例的驱动单元500的立体结构示意图。Please refer to FIG. 5, which is a schematic diagram of a three-dimensional structure of a driving unit 500 according to another embodiment of the present invention.
具体的，驱动单元500包括6个驱动臂510，每三个设置在驱动单元500的一侧，具体是：510a、510b、510c设置在一侧，510d、510e、510f设置于 另一侧。如前文所述，同样的，同一侧驱动臂510的长度、之间的长度关系以及位置设置均根据具体结构和工作原理而设计，在这里并不做具体限制。具体的，在本发明实施例中，驱动单元500同一侧三个驱动臂510的位置关系同图2a、图2b和图2c中的相似，即驱动单元500同一侧三个驱动臂510上下设置。Specifically, the driving unit 500 includes six driving arms 510, three of which are arranged on one side of the driving unit 500, specifically: 510a, 510b, 510c are arranged on one side, and 510d, 510e, and 510f are arranged on the other side. As mentioned above, similarly, the length, the length relationship between the driving arms 510 and the position setting of the same side driving arm 510 are all designed according to the specific structure and working principle, and there is no specific limitation here. Specifically, in the embodiment of the present invention, the positional relationship of the three driving arms 510 on the same side of the driving unit 500 is similar to that in FIGS. 2a, 2b, and 2c, that is, the three driving arms 510 on the same side of the driving unit 500 are arranged up and down.
需要说明的是，在本发明的其它实施例中，驱动臂总数还可以是奇数个，如3个、5个或者更多，即驱动单元两侧驱动臂的数量不相等。而且不同驱动臂之间的结构关系可以和上文所述的类似，在这里并不做具体限制，It should be noted that in other embodiments of the present invention, the total number of driving arms may also be an odd number, such as 3, 5 or more, that is, the number of driving arms on both sides of the driving unit is not equal. Moreover, the structural relationship between different driving arms can be similar to that described above, which is not specifically limited here.
请结合参考图6和图2c，图6为驱动轮130的局部结构示意图，131为轮齿。Please refer to FIG. 6 and FIG. 2c in combination. FIG. 6 is a partial structural diagram of the driving wheel 130, and 131 is a gear tooth.
在图2c的视角下，驱动单元100一侧两个驱动臂驱动端的水平距离为h，轮齿131的齿距为s，则0.5s≤h≤1.5s。具体的，在本发明的实施例中，h＝0.8s。在本发明的另一个实施例中，h＝1.2s。在本发明的又一个实施例中，h＝s。在这里，驱动臂110的驱动端是指驱动臂110在推动时直接和轮齿131接触的一端。水平距离是指按照如图2c的角度俯视时，驱动单元100同侧两个驱动臂110驱动端之间的平面距离。From the perspective of FIG. 2c, the horizontal distance between the driving ends of the two driving arms on the side of the driving unit 100 is h, and the pitch of the gear teeth 131 is s, then 0.5s≤h≤1.5s. Specifically, in the embodiment of the present invention, h=0.8s. In another embodiment of the present invention, h=1.2s. In yet another embodiment of the present invention, h=s. Here, the driving end of the driving arm 110 refers to the end of the driving arm 110 that directly contacts the gear teeth 131 when being pushed. The horizontal distance refers to the planar distance between the driving ends of the two driving arms 110 on the same side of the driving unit 100 when viewed from the angle shown in FIG. 2c.
需要说明的是，在本发明的其它实施例中，还可以有0.1s≤h＜0.5s或者1.5s＜h≤2.5s，均可以实现本发明的效果，在这里并不做具体限制。It should be noted that, in other embodiments of the present invention, 0.1s≦h<0.5s or 1.5s<h≦2.5s may also be adopted, both of which can achieve the effects of the present invention, which is not specifically limited here.
如图6所示，在本发明实施例中，驱动轮130为棘轮，轮齿131为棘轮齿。采用棘轮能够防止驱动轮130反转。每个棘轮齿齿面包括缓面和陡面，如图6所示。而且，在本发明实施例中，在驱动单元100单次向一个方向转动的整个过程中，驱动单元100的驱动臂110包括推动驱动轮130转动的部分和非推动驱动轮130转动的部分。推动驱动轮130转动的部分将推动力作用于棘轮齿的陡面实施推动，使驱动轮130向C方向转动。As shown in FIG. 6, in the embodiment of the present invention, the driving wheel 130 is a ratchet wheel, and the gear teeth 131 are ratchet teeth. The use of a ratchet can prevent the driving wheel 130 from reversing. Each ratchet tooth surface includes a gentle surface and a steep surface, as shown in Figure 6. Moreover, in the embodiment of the present invention, during the entire process of the driving unit 100 rotating in one direction at a time, the driving arm 110 of the driving unit 100 includes a part that pushes the driving wheel 130 to rotate and a part that does not push the driving wheel 130 to rotate. The part that pushes the driving wheel 130 to rotate applies the driving force to the steep surface of the ratchet tooth to push, so that the driving wheel 130 rotates in the C direction.
请参考图7，为驱动单元100和驱动轮130相配合的立体结构示意图。Please refer to FIG. 7, which is a schematic diagram of the three-dimensional structure of the cooperation of the driving unit 100 and the driving wheel 130.
结合图7、图1、图2b和图2c，在本发明实施例中，在动力单元180的作用下，驱动单元100绕着转轴120转动，从而带动驱动单元100两侧的多个驱动臂110推动轮齿131，进而推动驱动轮130转动。With reference to Figure 7, Figure 1, Figure 2b and Figure 2c, in the embodiment of the present invention, under the action of the power unit 180, the drive unit 100 rotates around the shaft 120, thereby driving the multiple drive arms 110 on both sides of the drive unit 100 The gear teeth 131 are pushed to push the driving wheel 130 to rotate.
请结合参考图7和图8，图8为驱动单元100进行转动的多个档位的位置结构示意图。Please refer to FIG. 7 and FIG. 8 in combination. FIG. 8 is a schematic diagram of the position structure of multiple gear positions of the driving unit 100 rotating.
如前文所述，驱动单元100同侧的驱动臂110驱动端之间具有一定距离h，在推动时其推动方向所在直线具有一定夹角α，因此，在驱动单元100单次向一个方向转动的整个过程中，如图7中单次向A方向转动，110a和/或110b 推动轮齿131使驱动轮130转动，而110c和110d可在轮齿131上滑动(如在棘轮齿的缓面上滑动，并不施加推动驱动轮130转动的力)。且明显的，110c先滑动到相邻的下一个齿上，并发出“哒”声。此时，110c的驱动端作用于棘轮齿的陡面，防止驱动轮130反转。此时驱动单元100可以停止转动，驱动臂110a和/或110b停止推动轮齿131，驱动轮130停止转动。驱动单元100完成了一个档位的转动，请参考图8，此时驱动单元100向A方向转动到A 1位置，即到达A 1档。下一刻驱动单元100继续向A方向转动，110d会滑动到相邻的下一个齿上，并同样发出“哒”声。同样的，110d的驱动端作用于棘轮齿的陡面，防止驱动轮130反转。驱动单元100又完成了一个档位的转动，请参考图8，此时驱动单元100转动到A 2位置，即到达A 2档。此时110c和110d各自完成一次相邻轮齿131之间的滑动，驱动单元100完成了单次向A方向转动的整个过程，实现A 1、A 2两档位转动，从而对驱动轮130进行两档位推动，使得药物输注装置进行两档位输注。 As mentioned above, there is a certain distance h between the driving ends of the driving arms 110 on the same side of the driving unit 100, and the straight line where the driving direction is located has a certain angle α when pushed. Therefore, the driving unit 100 rotates in one direction at a time. During the whole process, as shown in Fig. 7, a single rotation in the direction A, 110a and/or 110b pushes the gear tooth 131 to rotate the driving wheel 130, and 110c and 110d can slide on the gear tooth 131 (such as on the soft surface of the ratchet tooth) Sliding, no force is applied to push the driving wheel 130 to rotate). And obviously, 110c slides to the next adjacent tooth first and makes a "click" sound. At this time, the driving end of 110c acts on the steep surface of the ratchet tooth to prevent the driving wheel 130 from reversing. At this time, the driving unit 100 can stop rotating, the driving arms 110a and/or 110b stop pushing the gear teeth 131, and the driving wheel 130 stops rotating. A rotation drive unit 100 to complete a gear, please refer to FIG. 8, when the driving unit 100 is rotated in the direction A to position A 1, A 1 i.e. reaching speed. The next moment the drive unit 100 continues to rotate in the A direction, 110d will slide to the next adjacent tooth, and also make a "click" sound. Similarly, the driving end of 110d acts on the steep surface of the ratchet teeth to prevent the driving wheel 130 from reversing. The drive unit 100 has completed another gear rotation. Please refer to FIG. 8. At this time, the drive unit 100 rotates to the A 2 position, that is, reaches the A 2 gear. At this time, 110c and 110d each complete a sliding between adjacent gear teeth 131, and the drive unit 100 completes the entire process of a single rotation in the A direction to realize the rotation of the two gears A 1 and A 2 , thereby performing the driving wheel 130 The two-stage push makes the drug infusion device perform two-stage infusion.
需要说明的是，在上述转动过程中，还可以是110d先滑动至下一个轮齿131，110c后滑动至下一个轮齿131，在这里不作具体限制。同样的，当驱动单元100向B方向转动时，同样有B 1、B 2两档位的转动动作。 It should be noted that in the above-mentioned rotation process, 110d may also slide to the next gear tooth 131 first, and 110c and then slide to the next gear tooth 131, which is not specifically limited here. Similarly, when the driving unit 100 rotates in the B direction, there will also be two rotations of B 1 and B 2 .
明显的，驱动单元100在上述单次向A方向转动的整个过程中，驱动单元100经过了转动和停止转动相交替的动作，驱动臂110交替地推动和停止推动轮齿131，使驱动轮130交替地转动和停止转动，实现了对驱动轮130的两档位推动，最终达到两档位药物输注的目的。Obviously, during the above-mentioned single rotation of the driving unit 100 in the A direction, the driving unit 100 has undergone an alternating action of rotation and stop rotation. The driving arm 110 alternately pushes and stops pushing the gear teeth 131, so that the driving wheel 130 Rotating and stopping the rotation alternately realizes the two-gear push of the driving wheel 130, and finally achieves the purpose of two-gear medicine infusion.
具体的，当驱动单元100一侧具有两个驱动臂110时，驱动单元100在单次向A方向转动的整个过程中，驱动单元100经过转动-停止转动-转动的两档位动作，实现对驱动轮130的两档推动。当驱动单元100一侧具有三个驱动臂110时，驱动单元100在单次向A方向转动的整个过程中，驱动单元100经过转动-停止转动-转动-停止转动-转动三档位动作，实现对驱动轮130的三档推动，完成三档输注。以此类推，当驱动单元100一侧具有更多个驱动臂110时，驱动单元100通过旋-停-旋-停-旋-…-旋的多档位动作实现对驱动轮130的多档推动，完成多档输注。Specifically, when there are two driving arms 110 on one side of the driving unit 100, during the entire process of the driving unit 100 being rotated in the A direction once, the driving unit 100 undergoes a rotation-stop rotation-rotation two-gear action to realize the opposite The driving wheel 130 is driven by two gears. When there are three driving arms 110 on one side of the driving unit 100, during the whole process of a single rotation of the driving unit 100 in the A direction, the driving unit 100 undergoes a three-gear action of rotation-stop rotation-rotation-stop rotation-rotation to achieve Push the third gear of the driving wheel 130 to complete the third gear infusion. By analogy, when there are more driving arms 110 on one side of the driving unit 100, the driving unit 100 realizes the multi-speed pushing of the driving wheel 130 through the multi-gear action of rotation-stop-spin-stop-spin-...-spin , Complete multiple infusions.
请继续参考图7，结合上文所述，在本发明的实施例中，当驱动单元100推动驱动轮130转动时，实施推动力一侧的驱动臂110中至少有一个驱动臂110对轮齿131施加推动力。而另一侧的一个或两个驱动臂110与轮齿131接触，但并不对轮齿131施加使驱动轮130转动的力，只是会在某时刻提供防止 驱动轮130反转的力。因此，本发明实施例存在一种情况：驱动单元100的所有驱动臂110中只有一个驱动臂110对轮齿131施加推动驱动轮130转动的力，其他的驱动臂110会和驱动轮130接触，而并不对轮齿131施加推动驱动轮130转动的力。且此时，另一侧在轮齿上滑动的驱动臂110会对轮齿131施加防止驱动轮130反转的力。Please continue to refer to FIG. 7, in combination with the above, in the embodiment of the present invention, when the driving unit 100 pushes the driving wheel 130 to rotate, at least one of the driving arms 110 on the side of the driving force has a pair of gear teeth. 131 exerts impetus. On the other hand, one or two driving arms 110 are in contact with the gear teeth 131, but do not apply force to the gear teeth 131 to rotate the driving wheel 130, but will provide a force to prevent the driving wheel 130 from reversing at a certain moment. Therefore, there is a situation in the embodiment of the present invention: among all the driving arms 110 of the driving unit 100, only one driving arm 110 applies force to the gear teeth 131 to push the driving wheel 130 to rotate, and the other driving arms 110 will contact the driving wheel 130. However, no force is applied to the gear teeth 131 to push the driving wheel 130 to rotate. At this time, the drive arm 110 sliding on the gear teeth on the other side exerts a force on the gear teeth 131 to prevent the drive wheel 130 from reversing.
需要说明的是，对于在驱动单元100一侧有三个甚至更多个驱动臂110的本发明实施例中，驱动单元100工作时，也会有上述类似的情况。当驱动臂有奇数个时，驱动单元两侧的驱动臂数量不相等，驱动单元在向某一方向转动的整个过程中，也会有上述同样的过程。It should be noted that, in the embodiment of the present invention where there are three or more driving arms 110 on the side of the driving unit 100, when the driving unit 100 is working, the similar situation described above will also occur. When there are an odd number of driving arms, the number of driving arms on both sides of the driving unit is not equal, and the same process as described above will occur during the entire process of the driving unit rotating in a certain direction.
请继续参考图8，在本发明的另一个实施例中，当驱动单元100一侧具有两个驱动臂110时，驱动单元100向A方向转动一个档位，即到达A 1档后，转而向B方向转动一个档位或两个档位，即到达B 1档或B 2档，直至向B方向的转动停止。此过程为驱动单元100完成了一次向两个方向的交替转动，从而可对驱动轮130实施多档推动。因此，本发明实施例中，驱动单元100可以在A 1-B 1档位或A 1-B 1-B 2档位或B 1-A 1-A 2档位之间交替切换档位进行转动，达到切换不同档位进行输注的目的。 Please continue to refer to FIG. 8, another embodiment of the present invention, when the side of the drive unit 100 having two drive arms 110, a driving gear unit 100 rotates in the direction A, i.e., A 1 reaches the speed, turn Rotate one gear or two gears in the B direction to reach the B 1 or B 2 gear until the rotation in the B direction stops. In this process, the driving unit 100 completes one rotation in two directions alternately, so that the driving wheel 130 can be pushed in multiple gears. Therefore, in the embodiment of the present invention, the drive unit 100 can alternately switch gears to rotate between gears A 1 -B 1 or gears A 1 -B 1 -B 2 or gears B 1 -A 1 -A 2 , To achieve the purpose of switching different gears for infusion.
继续参考图8，在本发明的又一个实施例中，驱动单元100还可以直接转动到A 2档位，而不经过A 1档位。然后再直接转动到B 2档位，而不经过B 1档位，即驱动单元100直接在A 2-B 2档位之间交替转动。如上所述，驱动单元100还可以在A 1-B 1档位之间交替转动。明显的，在单位时间内，驱动单元100在A 2-B 2档位之间交替转动时的药物输注量大于其在A 1-B 1档位之间交替转动时的药物输注量。如果最小档输注的药物量为该药物输注装置的最小药物输注量，那么利用本发明实施例的药物输注装置能够降低最小药物输注量，实现对药物输注的精确控制。当患者需要输注较多药物时，可选择大档位A 2-B 2档位模式，加快输注速率。当需要输注少量药物时，患者可以选择小档位A 1-B 1档位模式，降低药物输注速率，实现对药物输注的精确控制。 Continuing to refer to FIG. 8, in another embodiment of the present invention, the driving unit 100 can also be directly rotated to the A 2 gear without passing through the A 1 gear. Then it directly rotates to the B 2 gear position without passing the B 1 gear position, that is, the driving unit 100 directly rotates alternately between the A 2 -B 2 gear positions. As described above, the driving unit 100 can also alternately rotate between the A 1 -B 1 gear positions. Obviously, in a unit time, the drug infusion amount when the driving unit 100 alternately rotates between the A 2 -B 2 gears is greater than the drug infusion amount when it alternately rotates between the A 1 -B 1 gears. If the minimum amount of infusion of the drug is the minimum drug infusion amount of the drug infusion device, the drug infusion device of the embodiment of the present invention can reduce the minimum drug infusion amount and achieve precise control of the drug infusion. When the patient needs to infuse more drugs, the large gear A 2 -B 2 gear mode can be selected to speed up the infusion rate. When a small amount of medicine needs to be infused, the patient can choose the small gear A 1 -B 1 gear mode to reduce the drug infusion rate and achieve precise control of the drug infusion.
在一种药物输注系统中，驱动单元两侧分别只设置有一个驱动臂，单次向一个方向转动的整个过程中，只能对驱动轮实施一档推动，如图8中只能在A 2-B 2之间交替推动。该一档推动方法不能够灵活控制药物输注量和输注速率。同时，最小药物输注量较大，不能精确控制药物输注，最终会导致患者体液水平波动较大。同时也是对药物的一种浪费，增加了患者的成本。 In a drug infusion system, only one drive arm is provided on both sides of the drive unit. During the entire process of a single rotation in one direction, the drive wheel can only be pushed in one gear, as shown in Figure 8. Push alternately between 2- B 2 . This one-step push method cannot flexibly control the amount and rate of drug infusion. At the same time, the minimum drug infusion volume is large, and the drug infusion cannot be accurately controlled, which will eventually cause large fluctuations in the patient's body fluid level. At the same time, it is also a waste of medicine, which increases the cost of patients.
与具有一个档位输注的装置相比，本发明实施例药物输注装置通过在驱动 单元上设置多于两个驱动臂实现对驱动轮的多个档位推动，进而达到多档位药物输注的目的。利用本发明实施例的药物输注装置，患者可根据实际输注量以及输注速率的需求，自由灵活地切换不同的输注档位，提高了输注效率。同时，在大档位A 2-B 2档位之间设置中间档位A 1-B 1-B 2档位或B 1-A 1-A 2档位，以及小档位A 1-B 1档位，药物输注装置能够降低最小药物输注量，达到精确控制输注的目标。 Compared with the device with one gear infusion, the drug infusion device of the embodiment of the present invention implements multiple gears of the driving wheel by providing more than two drive arms on the drive unit, thereby achieving multi-stage drug infusion. The purpose of attention. By using the drug infusion device of the embodiment of the present invention, the patient can freely and flexibly switch different infusion gears according to the actual infusion volume and infusion rate requirements, thereby improving the infusion efficiency. At the same time, the middle gears A 1 -B 1 -B 2 or B 1 -A 1 -A 2 are set between the large gears A 2 -B 2 and the small gears A 1 -B 1 In the gear position, the drug infusion device can reduce the minimum drug infusion volume and achieve the goal of precise control of the infusion.
如利用本发明实施例的药物输注装置，在开始输注时，药物输注量比较大，患者可以选择图8所示的大档位A 2-B 2档进行输注。输注一段时间后，可改用中间档位A 1-B 1-B 2档或B 1-A 1-A 2档，降低药物输注的速率。当接近完成药物输注时，患者可选用小档位A 1-B 1档位输注，进一步降低输注速率，达到对药物输注的精确控制。当然，患者还可以选择其中某一个或某几个档位进行输注，这里并不做具体限制。 For example, with the drug infusion device of the embodiment of the present invention, when the infusion is started, the amount of drug infusion is relatively large, and the patient can select the large gear A 2 -B 2 shown in FIG. 8 for infusion. After a period of infusion, the intermediate gears A 1 -B 1 -B 2 or B 1 -A 1 -A 2 can be used to reduce the rate of drug infusion. When the drug infusion is nearly complete, the patient can choose the small gears A 1 -B 1 for infusion to further reduce the infusion rate and achieve precise control of the drug infusion. Of course, the patient can also choose one or several stalls for infusion, and there is no specific limitation here.
在本发明的其它实施例中，当驱动单元100的一侧设置多于两个驱动臂110时，药物输注装置可具有更多且更加精细的输注档位，患者可以进一步灵活控制输注过程，更加精密地控制输注。In other embodiments of the present invention, when more than two driving arms 110 are provided on one side of the driving unit 100, the drug infusion device can have more and more precise infusion gears, and the patient can further flexibly control the infusion. Process, more precise control of the infusion.
综上所述，本发明公开了一种药物输注装置，在驱动单元上设置多于两个驱动臂，驱动单元通过多个档位的转动对驱动轮进行多档位推动，进而实现了对药物的多档输注，增加了患者对输注过程控制的灵活度，提高了药物输注效率。同时药物输注装置也减低了最小药物输注量，患者能够精确控制药物输注，精密管理自身的生理状况。To sum up, the present invention discloses a medicine infusion device. More than two driving arms are arranged on the driving unit. The driving unit pushes the driving wheel in multiple gears through the rotation of multiple gears, thereby realizing the The multi-stage infusion of drugs increases the flexibility of patients to control the infusion process and improves the efficiency of drug infusion. At the same time, the drug infusion device also reduces the minimum amount of drug infusion, and the patient can precisely control the drug infusion and precisely manage their own physiological conditions.
虽然已经通过示例对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims (15)

  1. 一种药物输注装置，其特征在于，包括：A medicine infusion device is characterized by comprising:
    储药单元(150)；Medicine storage unit (150);
    分别与螺杆(170)相连接的活塞(160)和驱动轮(130)，所述驱动轮(130)The piston (160) and the driving wheel (130) respectively connected with the screw (170), the driving wheel (130)
    通过转动推动所述螺杆(170)运动，所述活塞(160)设置于所述储药单元(150)中，所述螺杆(170)推动所述活塞(160)运动；The screw (170) is pushed to move by rotating, the piston (160) is arranged in the medicine storage unit (150), and the screw (170) pushes the piston (160) to move;
    与所述驱动轮(130)相配合的驱动单元，所述驱动单元包括多于两个驱动臂，所述驱动单元通过多个档位的转动带动所述驱动臂对所述驱动轮(130)实施多档位推动，以进行多档位输注；和A drive unit that cooperates with the drive wheel (130), the drive unit includes more than two drive arms, and the drive unit drives the drive arm to the drive wheel (130) by rotating multiple gears. Implement multi-level push for multi-level infusion; and
    与所述驱动单元相连接的动力单元(180)，所述动力单元(180)对所述驱动单元施加力的作用使所述驱动单元进行多个档位的转动。A power unit (180) connected to the drive unit, the power unit (180) exerts a force on the drive unit to make the drive unit rotate in multiple gears.
  2. 根据权利要求1所述的药物输注装置，其特征在于，所述驱动单元的所述多个档位转动包括：所述驱动单元单次向一个方向转动一个或多个档位后，开始单次向另一个方向转动一个或多个档位，直至向所述另一方向的转动结束，所述驱动单元完成一次向两个方向的交替转动，以对所述驱动轮(130)实施多档推动。The drug infusion device according to claim 1, wherein the rotation of the multiple gears of the drive unit comprises: after the drive unit rotates one or more gears in one direction for a single time, starting a single Turn one or more gears in the other direction at a time until the rotation in the other direction ends, and the drive unit completes one-time alternate rotation in two directions to implement multiple gears on the drive wheel (130) promote.
  3. 根据权利要求2所述的药物输注装置，其特征在于，所述驱动轮(130)包括多个子轮，所述子轮的圆周表面设置有轮齿，所述驱动臂通过推动所述轮齿使所述驱动轮(130)转动。The drug infusion device according to claim 2, wherein the driving wheel (130) comprises a plurality of sub-wheels, the circumferential surface of the sub-wheels is provided with gear teeth, and the driving arm pushes the gear teeth Rotate the driving wheel (130).
  4. 根据权利要求3所述的药物输注装置，其特征在于，所述驱动单元的两侧分别设置多个所述驱动臂。The medicine infusion device according to claim 3, wherein a plurality of the driving arms are respectively provided on both sides of the driving unit.
  5. 根据权利要求4所述的药物输注装置，其特征在于，当所述驱动单元一侧的所述驱动臂推动所述轮齿时，该侧多个所述驱动臂在推动方向所在的直线相交。The drug infusion device according to claim 4, wherein when the drive arm on one side of the drive unit pushes the gear teeth, the multiple drive arms on this side intersect the lines in the pushing direction. .
  6. 根据权利要求5所述的药物输注装置，其特征在于，所述驱动单元两侧分别设置两个所述驱动臂，位于所述驱动单元一侧的两个所述驱动臂呈上下设置，或者呈左右设置。The drug infusion device according to claim 5, wherein two drive arms are provided on both sides of the drive unit, and the two drive arms on one side of the drive unit are arranged up and down, or Set up left and right.
  7. 根据权利要求6所述的药物输注装置，其特征在于，所述驱动单元一侧的两个所述驱动臂呈上下设置，当所述驱动单元一侧的所述驱动臂推动所述轮齿时，该侧两个所述驱动臂在推动方向所在直线的夹角为α，0°≤α≤7°。The drug infusion device according to claim 6, wherein the two drive arms on one side of the drive unit are arranged up and down, and when the drive arm on the side of the drive unit pushes the gear teeth When, the angle between the two driving arms on the side in the pushing direction is α, 0°≤α≤7°.
  8. 根据权利要求7所述的药物输注装置，其特征在于，3.1°≤α≤4.1°。The drug infusion device according to claim 7, characterized in that 3.1°≤α≤4.1°.
  9. 根据权利要求8所述的药物输注装置，其特征在于，α＝3.5°。The drug infusion device according to claim 8, wherein α=3.5°.
  10. 根据权利要求6所述的药物输注装置，其特征在于，所述驱动单元一侧的两个所述驱动臂驱动端的水平距离为h，所述轮齿的齿距为s，0.1s≤h≤2.5s。The drug infusion device according to claim 6, wherein the horizontal distance between the two driving ends of the driving arm on one side of the driving unit is h, and the tooth pitch of the gear teeth is s, 0.1s≤h ≤2.5s.
  11. 根据权利要求10所述的药物输注装置，其特征在于，0.5s≤h≤1.5s。The drug infusion device according to claim 10, wherein 0.5s≤h≤1.5s.
  12. 根据权利要求3所述的药物输注装置，其特征在于，所述轮齿为棘轮齿，所述驱动单元单次向一个方向转动的整个过程中，所述驱动单元通过多个档位的转动和停止转动的交替动作，带动所述驱动臂交替地推动和停止推动所述棘轮齿，使所述驱动轮(130)交替地转动和停止转动，以对所述驱动轮(130)实施多档推动。The drug infusion device according to claim 3, wherein the gear teeth are ratchet teeth, and during the entire process of the drive unit rotating in one direction at a time, the drive unit rotates through multiple gears. The alternate action of driving the driving arm to alternately push and stop pushing the ratchet teeth, causing the driving wheel (130) to alternately rotate and stop rotating, so as to implement multiple gears on the driving wheel (130) promote.
  13. 根据权利要求12所述的药物输注装置，其特征在于，当所述驱动单元推动所述驱动轮(130)时，施加推动力一侧的所述驱动臂中至少有一个驱动臂推动所述轮齿，而所述驱动单元另一侧的所述驱动臂不对所述轮齿施加使所述驱动轮(130)转动的力。The drug infusion device according to claim 12, characterized in that when the driving unit pushes the driving wheel (130), at least one of the driving arms on the side applying the pushing force pushes the Gear teeth, and the drive arm on the other side of the drive unit does not apply force to the gear teeth to rotate the drive wheel (130).
  14. 根据权利要求1所述的药物输注装置，其特征在于，所述驱动单元的所述多个档位包括大档位和小档位，所述驱动单元可在所述大档位和所述小档位之间切换转动，以实现不同档位的输注。The medicine infusion device according to claim 1, wherein the multiple gear positions of the drive unit include a large gear position and a small gear position, and the drive unit can be in the large gear position and the Switch and rotate between small gears to realize infusion of different gears.
  15. 根据权利要求14所述的药物输注装置，其特征在于，所述驱动单元的所述多个档位还包括一个或多个中间档位，所述中间档为介于所述大档位和所述小档位之间，在进行输注时，所述驱动单元可在所述大档位、所述中间档位和所述小档位之间切换转动，以实现不同档位的输注。The medicine infusion device according to claim 14, wherein the multiple gear positions of the drive unit further include one or more intermediate gear positions, and the intermediate gear is between the large gear position and the Between the small gears, during infusion, the drive unit can switch and rotate among the large gears, the middle gears, and the small gears, so as to realize the infusion of different gears .
PCT/CN2019/087342 2019-05-17 2019-05-17 Drug infusion device WO2020232565A1 (en)

Priority Applications (52)

Application Number Priority Date Filing Date Title
PCT/CN2019/087342 WO2020232565A1 (en) 2019-05-17 2019-05-17 Drug infusion device
EP19929733.4A EP3970767A4 (en) 2019-05-17 2019-05-17 Drug infusion device
US17/432,096 US20220339763A1 (en) 2019-05-17 2019-05-17 Drug infusion device
CN201980093472.7A CN113543823B (en) 2019-05-17 2019-05-17 Drug infusion device
CN201911413566.6A CN111939371B (en) 2019-05-17 2019-12-31 Miniature patch type intelligent control infusion device
US17/432,095 US20220143304A1 (en) 2019-05-17 2019-12-31 Miniature patch-type intelligent control infusion device
PCT/CN2019/130442 WO2020233128A1 (en) 2019-05-17 2019-12-31 Miniature patch-type intelligent control infusion device
EP19929277.2A EP3969078A4 (en) 2019-05-17 2019-12-31 Miniature patch-type intelligent control infusion device
US17/431,426 US20220118176A1 (en) 2019-05-17 2020-05-14 Bilaterally driven drug infusion device with multiple infusion modes
PCT/CN2020/090152 WO2020233486A1 (en) 2019-05-17 2020-05-14 Bilaterally driven drug infusion device with multiple infusion modes
CN202010408078.2A CN111939386B (en) 2019-05-17 2020-05-14 Double-side driven multi-infusion injection molding type medicine infusion device
CN202010408079.7A CN111939387B (en) 2019-05-17 2020-05-14 Drug infusion device with multiple infusion modes
EP20810308.5A EP3969079A4 (en) 2019-05-17 2020-05-14 Bilaterally driven drug infusion device with multiple infusion modes
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PCT/CN2020/103376 WO2021135173A1 (en) 2019-05-17 2020-07-22 High reliability drug infusion device
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